Plumbing work must comply with the performance requirements of the Plumbing Code of Australia (PCA). This can be achieved using the deemed-to-satisfy (prescriptive) method, a performance solution, or a combination of both. More details are provided in the National Construction Code.
If you intend to use a performance solution for a plumbing installation, you need to be aware of the process and requirements for this method.
For a summary of how to develop a performance solution, view the video below.
The National Construction Code website also has information on performance solutions.